Apatosaurus


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Apatosaurus

(ăp'ətəsôr`əs, ā'păt'ə–), [Gr.,=deceptive lizard], quadruped saurischian dinosaurdinosaur
[Gr., = terrible lizard], extinct land reptile of the Mesozoic era. The dinosaurs, which were egg-laying animals, ranged in length from 2 1-2 ft (91 cm) to about 127 ft (39 m).
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, estimated to be from 70 to 90 ft (21 to 27 m) in length and to weigh up to 30 tons (27 metric tons). The similar dinosaur formerly called Brontosaurus [Gr.,=thunder lizard] was reclassified as Apatosaurus after it was determined that the two animals were, in fact, the same. Paleontologist O. C. Marsh named a specimen he uncovered in 1877 Apatosaurus ajax. Marsh discovered parts of a second fossil skeleton in 1879 and, not recognizing it as the same animal, called it Brontosaurus excelsus. When the two animals were determined in the early 1900s to be same, the name Apatosaurus, which was published first, took priority as the valid name. Brontosaurus, however, continued to be used popularly, and it became one of the best known dinosaurs. A 2015 study argued that the animals should be divided into two genera due to differences in the surviving specimens' skeletons and that the name Brontosaurus should be restored.

Apatosaurus had a long, whiplike tail, stout legs, and a long neck. It was herbivorous and dwelled on land, possibly in forests, using its long neck to feed from trees. The eyes and nostrils were located toward the top of the skull. It flourished in the late Jurassic period. Apatosaurus bones and those of other sauropods have long been excavated in the Morrison formation of the late Jurassic and early Cretaceous strata in Colorado, Wyoming, and other Western states. No satisfactory skull specimen has been discovered attached to an Apatosaurus, and for many years an incorrect Camarasaurus-like head was mounted on the famous skeleton on display at the American Museum of Natural History in New York City. Apatosaurus is related to Diplodicus and Barosaurus.

Bibliography

See S. J. Gould, Bully for Brontosaurus (1991).

Apatosaurus

[ə‚pad·ə′sȯr·əs]
(paleontology)
A herbivorous sauropod dinosaur, approximately 70 feet (21 meters) long and weighing 30 tons, from the Jurassic Period that had much longer hindlimbs than forelimbs. Also known as Brontosaurus.
References in periodicals archive ?
Riggs decided that the dinosaur was so similar to species in the Apatosaurus genus that it belonged there as well.
4 DINOSAUR JOURNEY MUSEUM In Fruita, a branch of the Museum of Western Colorado that focuses on ancient history, Dinosaur Journey displays little dinosaurs like Fruitadens and giant dinosaurs like Apatosaurus, not to mention moving, roaring robotic versions of Triceratops and Stegosaurus.
In a scientific paper published in 1903, Elmer Riggs of Chicago's Field Museum demonstrated that Apatosaurus and Brontosaurus were two specimens of the same genus.
The huge size of Apatosaurus (uh-PAT-uh-SAW-rus) gave a lot of protection.
Instead of weighing 38 tonnes, apatosaurus may have tipped the scales at a relatively puny 18 tonnes.
On average, most dinosaur skeletons recovered are only around 65 per cent real bone making Einstein the most complete Apatosaurus ever discovered and one of the most authentic assembled dinosaurs ever displayed.
This section of the mural shows an Apatosaurus, one of the largest animals that ever lived on land.
trampled underfoot as Noah stuffs an Apatosaurus into the Ark.
37) For example, Gould recounts the sloppy science that resulted in the names Apatosaurus and Brontosaurus being given to the same dinosaur.
Drawing subjects include Apatosaurus, Allosaurus, Triceratops, Stegasourus and more
Everything you can ever think of preserved in the fossil record, from microscopic pollen to 35-ton Apatosaurus, I can probably find an example of it in at least one park, if not more than one," says McDonald.
apatosaurus, acceleration, esophagus, photosynthesis), as well as general vocabulary words beyond the reading level of many first grade students (e.